A rail robot for deploying a fire blanket within a tunnel

Abstract

The application discloses a track type robot for putting out fire blanket in a tunnel, and particularly relates to the technical field of fire extinguishing devices, which comprises a fixing cover, a rack slide rail is arranged in the fixing cover, a moving frame is connected to the outside of the rack slide rail, two symmetrical motors are arranged on the top of the moving frame, gears are connected to the output ends of the two motors, a hydraulic cylinder is arranged on one side in the moving frame, a fire extinguishing assembly is arranged on the extension end of the hydraulic cylinder, and a fire extinguishing liquid tank is arranged at the bottom of the fire extinguishing assembly; the connecting rod is above the vehicle through the rotation of the steering seat driven by the motor, and the robot can adjust the coverage range of the fire blanket device in real time through the linkage design of the electric push rod and the extension rod, so that the fire extinguishing demand of double lanes or large-area fire can be met; during the putting process, the cooperation of the steel wire rope and the counterweight rod can automatically tighten the fire blanket after the fire blanket is lowered, so that the fire blanket can be closely attached to the vehicle, effective isolation can be achieved, and the fire extinguishing efficiency can be remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing device technology, and more specifically, to a track-mounted robot for deploying fire blankets in tunnels. Background Technology

[0002] Vehicle fires are one of the most serious hazards in tunnel traffic environments. Because tunnels are relatively enclosed spaces, once a vehicle fire occurs, the fire can spread rapidly, producing large amounts of toxic smoke and high temperatures, which seriously threatens the lives of people inside the tunnel. At the same time, it can also damage the tunnel structure, causing traffic disruptions and resulting in huge economic losses.

[0003] Currently, the commonly used fire-fighting equipment in tunnels is mainly fixed fire-fighting facilities, such as fire hydrants and fire extinguishers. However, these devices have certain limitations when dealing with vehicle fires. For example, when a fire occurs, people may not be able to approach the fire source in time to operate the fire-fighting equipment due to panic or smoke obstruction. Moreover, the fire-fighting capacity of fixed fire-fighting equipment may be insufficient for some large vehicle fires.

[0004] In addition, existing mobile fire-fighting equipment, such as fire trucks, are limited by space when traveling and operating in tunnels, and their response speed and flexibility are not ideal. Fire trucks are also bulky and have difficulty reaching the fire scene quickly in narrow tunnels. Furthermore, they may be limited by factors such as tunnel height and width during operation, making it impossible to flexibly adjust the working position and angle, thus affecting the fire-fighting effect. To address this, we propose a track-mounted robot for deploying fire blankets in tunnels. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a track-mounted robot for delivering fire blankets in tunnels, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a track-type robot for deploying fire blankets in tunnels, comprising a fixed cover, a rack and pinion slide rail installed inside the fixed cover, a movable frame connected to the outside of the rack and pinion slide rail, two symmetrical motors installed on the top of the movable frame, gears connected to the output ends of the two motors, a hydraulic cylinder installed on one side inside the movable frame, a fire extinguishing component installed on the telescopic end of the hydraulic cylinder, and a fire extinguishing liquid tank installed at the bottom of the fire extinguishing component. The fire extinguishing assembly includes a fixed base mounted on the telescopic end of a hydraulic cylinder. A motor is installed inside the fixed base. The power drive end of motor one is connected to a steering seat. A protective cover is installed on top of the steering seat. A motor two is installed inside the protective cover. The power drive end of motor two is connected to a rotating seat. A connecting rod is installed inside the rotating seat. An electric push rod is installed inside the connecting rod. A storage groove is provided on the inner edge of the connecting rod. A mounting plate is installed on the telescopic end of the electric push rod one. A telescopic rod is installed at one end of the mounting plate. Both the connecting rod and the telescopic rod are wrapped with fire extinguishing blankets. A fixing plate is installed on one side of the outer edge of the protective cover. The internal structure is connected to a telescopic plate. A fixed plate 2 is installed at one end of the telescopic plate. An electric push rod 2 is installed at the bottom end of the fixed plate 1. An electric push rod 3 is installed at the bottom end of the fixed plate 2. Connecting frame 1 and connecting frame 2 are installed at the telescopic ends of electric push rod 2 and electric push rod 3, respectively. A telescopic frame is installed at one end of connecting frame 2. Several sets of equidistant springs are installed at the bottom of connecting frame 1. A clamping positioning plate 1 is installed at one end of each spring. A clamping positioning telescopic frame is connected to the inner edge of clamping positioning plate 1. A clamping positioning plate 2 is installed at one end of clamping positioning telescopic frame. A linkage plate is installed at one end of the mounting plate and one side of the fixed plate 2. Both the connecting rod and the telescopic rod are equipped with steel wire ropes on the outside. The fire blanket device has counterweights at both ends on the outside. The two counterweights are equipped with iron wires inside. The two ends of the steel wire rope are connected to the two ends of the iron wires.

[0007] Preferably, the teeth of the gear mesh with the teeth of the rack and pinion rail to drive the moving frame to move along the rack and pinion rail, and the gear is rotatably connected inside the moving frame.

[0008] Preferably, two symmetrical sliding plates are installed on the inner side of the movable frame, and two symmetrical sliding grooves are opened on the top of the rack and pinion slide rail.

[0009] Preferably, the groove is slidably connected inside the slide plate.

[0010] Preferably, the steering seat is rotatably connected to the top of the fixed seat, and the rotating seat is rotatably connected to one side of the protective cover.

[0011] Preferably, the telescopic rod and the externally wrapped fire blanket are both located inside the storage groove one, and the outer diameter of the mounting plate is the same as the outer diameter of the connecting rod. The electric push rod one drives the mounting plate and the telescopic rod to extend and retract along the storage groove one to adjust the coverage of the fire blanket device.

[0012] Preferably, fixing plate one and fixing plate two are connected by a telescopic plate, and electric push rod two and electric push rod three drive connecting frame one and connecting frame two to move respectively.

[0013] Preferably, the telescopic frame is connected to the inner edge of the connecting frame one to realize the clamping and releasing of the end of the fire blanket device by the clamping positioning plate one and the clamping positioning plate two.

[0014] Preferably, clamping positioning plate one and clamping positioning plate two are elastically connected by springs and clamping positioning telescopic frames to adapt to fire blanket devices of different thicknesses and ensure clamping stability.

[0015] The technical effects and advantages of this invention are as follows: In use, this invention allows the track-mounted robot to move flexibly along a pre-set track within the tunnel, quickly reaching the vehicle's fire location. A motor drives the steering seat to rotate, positioning the connecting rod above the vehicle. Through the linkage between the electric push rod and the telescopic rod, the robot can adjust the coverage area of ​​the fire blanket in real time, meeting the firefighting needs of two-lane or large-area fires. During deployment, the steel cable and counterweight automatically tighten the fire blanket after lowering, ensuring it adheres tightly to the vehicle, effectively isolating oxygen and significantly improving firefighting efficiency. After deployment, the rewinding of the steel cable further tightens the fire blanket, ultimately lifting the vehicle off the ground for rapid relocation. This prevents vehicles from obstructing traffic within the tunnel and avoids smoke from the fire affecting tunnel visibility, thus preventing unnecessary traffic accidents.

[0016] In use, the end of the fire blanket is fixed by an elastic clamping mechanism consisting of clamping positioning plate one and clamping positioning plate two. The elastic structure of the spring and the clamping positioning telescopic frame can adapt to fire blanket devices of different thicknesses, ensuring clamping stability. Before deployment, this mechanism effectively prevents the fire blanket from sagging due to gravity, thus preventing deployment deviation. During deployment, the dynamic adjustment of electric push rod two and electric push rod three further ensures the smooth lowering of the fire blanket and improves coverage accuracy. This design significantly enhances the reliability and fire extinguishing effect of the robot in complex tunnel environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a top view of the structure of the present invention.

[0019] Figure 3 This is a schematic diagram of removing the fixing cover according to the present invention.

[0020] Figure 4 This is an internal view of the present invention showing the removal of the fixing cover.

[0021] Figure 5 This is a schematic diagram of the fire extinguishing component of the present invention.

[0022] Figure 6 This is an internal diagram of the fire extinguishing component of the present invention.

[0023] Figure 7 This is a first-view semi-exploded view of the fire extinguishing component of the present invention.

[0024] Figure 8 This is a second-view semi-exploded view of the fire extinguishing component of the present invention.

[0025] Figure 9 This is an unfolded diagram of the fire blanket device of the present invention.

[0026] The attached diagram is labeled as follows: 1. Fixed cover; 2. Rack and pinion slide rail; 3. Moving frame; 4. Motor; 5. Gear; 6. Slide plate; 7. Slide groove; 8. Hydraulic cylinder; 9. Fire extinguishing assembly; 10. Fire extinguishing liquid tank; 91. Fixed base; 92. Motor 1; 93. Rotating base; 94. Protective cover; 95. Motor 2; 96. Rotating base; 97. Connecting rod; 98. Electric push rod 1; 99. Storage slot 1; 910. Telescopic rod; 911. Mounting plate; 912. 914. Fire blanket device; 915. Fixing plate 1; 916. Electric push rod 2; 917. Telescopic plate; 918. Fixing plate 2; 919. Electric push rod 3; 920. Connecting frame 1; 921. Telescopic frame; 922. Connecting frame 2; 923. Spring; 924. Clamping and positioning plate 1; 925. Clamping and positioning telescopic frame; 926. Clamping and positioning plate 2; 907. Linkage plate; 908. Steel wire rope; 909. Iron wire; 900. Counterweight rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As attached Figures 1-9The above describes a track-mounted robot for deploying fire blankets in tunnels. It includes a fixed cover 1, with a rack and pinion rail 2 installed inside. A movable frame 3 is connected to the outside of the rack and pinion rail 2. Two symmetrical motors 4 are mounted on the top of the movable frame 3, and gears 5 are connected to the output ends of the two motors 4. The teeth of the gears 5 mesh with the teeth of the rack and pinion rail 2 to drive the movable frame 3 to move along the rack and pinion rail 2. The gears 5 are rotatably connected inside the movable frame 3. Two symmetrical sliding plates 6 are mounted on one side of the inside of the movable frame 3. Two symmetrical sliding grooves 7 are opened on the top of the rack and pinion rail 2, and the sliding grooves 7 are slidably connected inside the sliding plates 6. A hydraulic cylinder 8 is mounted on one side of the inside of the movable frame 3. A fire extinguishing component 9 is mounted on the telescopic end of the hydraulic cylinder 8. A fire extinguishing liquid tank 10 is mounted at the bottom of the fire extinguishing component 9. A spray structure is provided on one side of the fire extinguishing liquid tank 10, which can spray fire extinguishing liquid to extinguish fires that have just started to burn, thereby reducing vehicle damage. The fire extinguishing assembly 9 includes a fixed base 91 installed at the telescopic end of the hydraulic cylinder 8. A motor 92 is installed inside the fixed base 91. A steering seat 93 is connected to the power drive end of the motor 92. A protective cover 94 is installed on the top of the steering seat 93. A second motor 95 is installed inside the protective cover 94. A rotating seat 96 is connected to the power drive end of the second motor 95. A connecting rod 97 is installed inside the rotating seat 96. An electric push rod 98 is installed inside the connecting rod 97. A storage groove 99 is provided at the inner edge of the connecting rod 97. A mounting plate 911 is installed at the telescopic end of the electric push rod 98. A telescopic rod 910 is installed at one end of the mounting plate 911. A fire blanket device 912 is wrapped around the outside of both the connecting rod 97 and the telescopic rod 910. A fixed plate 914 is installed on one side of the outer side of the protective cover 94. A device is connected inside the fixed plate 914. Telescopic plate 916, one end of telescopic plate 916 is equipped with fixed plate 2 917, one end of fixed plate 1 914 is equipped with electric push rod 2 915, one end of fixed plate 2 917 is equipped with electric push rod 3 918, the telescopic ends of electric push rod 2 915 and electric push rod 3 918 are respectively equipped with connecting frame 1 919 and connecting frame 2 921, one end of connecting frame 2 921 is equipped with telescopic frame 920, the bottom of connecting frame 1 919 is equipped with several sets of equidistant springs 922, one end of each spring 922 is jointly equipped with clamping positioning plate 1 923, the inner edge of clamping positioning plate 1 923 is connected with clamping positioning telescopic frame 924, one end of clamping positioning telescopic frame 924 is equipped with clamping positioning plate 2 925, one end of mounting plate 911 and one side of fixed plate 2 917 are jointly equipped with linkage plate 926; Steel wire ropes 901 are installed on the outside of both the connecting rod 97 and the telescopic rod 910. Counterweight rods 903 are installed at both ends of the fire blanket device 912. Iron wires 902 are installed inside both counterweight rods 903. The two ends of the steel wire rope 901 are connected to the two ends of the iron wires 902. The steering seat 93 is rotatably connected to the top of the fixed seat 91, and the rotating seat 96 is rotatably connected to one side of the protective cover 94. The telescopic rod 910 and the externally wrapped fire blanket device 912 are both located inside the storage slot 99, and the outer diameter of the mounting plate 911 is the same as the outer diameter of the connecting rod 97. The electric push rod 98 drives the mounting plate 911 and the telescopic rod 910 to extend and retract along the storage slot 99 to adjust the coverage area of ​​the fire blanket device 912. The first fixed plate 914 and the second fixed plate 917 are connected by the telescopic plate 916. Electric push rod 2 915 and electric push rod 3 918 drive connecting frame 1 919 and connecting frame 2 921 to move respectively. Telescopic frame 920 is connected to the inner edge of connecting frame 1 919 to realize the clamping and releasing of clamping positioning plate 1 923 and clamping positioning plate 2 925 on the end of fire blanket device 912. Clamping positioning plate 1 923 and clamping positioning plate 2 925 are elastically connected by spring 922 and clamping positioning telescopic frame 924 to adapt to fire blanket devices 912 of different thicknesses and ensure clamping stability.

[0029] The linkage between the electric push rod 98 and the telescopic rod 910 enables real-time adjustment of the fire blanket's coverage area to meet the needs of two-lane or large-area fires. The coordinated design of the wire rope 901 and the counterweight rod 903 ensures that the fire blanket automatically tightens after being lowered, improving fire extinguishing efficiency. The elastic structure of the spring 922 and the clamping and positioning telescopic frame 924 ensures that the end of the fire blanket remains stable during deployment, avoiding any impact on coverage accuracy due to shaking. When the control system issues a start command, the motor of the electric push rod 98 is powered on and runs, converting the rotational motion into linear motion through the internal screw and nut mechanism; the telescopic end of the electric push rod 98 extends outward, directly pushing the mounting plate 911 to slide outward along the storage groove 99 inside the connecting rod 97; the mounting plate 911 moves outward under the drive of the electric push rod 98, and the telescopic rod 910 connected to its end extends outward from the storage groove 99 at the same time; During the extension of the top structure, electric push rods 2 915 and 3 918 adjust the positions of clamping positioning plates 1 923 and 2 925 via connecting frame 1 919 and connecting frame 2 921; the elastic action of spring 922 and clamping positioning telescopic frame 924 ensures stable clamping force and prevents the end of fire blanket device 912 from drooping due to gravity; when the top structure is extended to the target position, electric push rods 2 915 and 3 918 reverse their actions to release the clamping positioning plates, preparing for the lowering of the fire blanket; The fire extinguishing liquid tank 10 is designed to allow staff to add nozzles as needed, and to carry out fire extinguishing work in conjunction with the fire extinguishing liquid inside the fire extinguishing liquid tank 10 through the fire extinguishing blanket device 912.

[0030] Working principle of the invention: The mobile frame 3 is driven by two motors 4 symmetrically installed on the top to rotate the gear 5. The gear 5 meshes with the rack and pinion rail 2 inside the fixed cover 1, causing the mobile frame 3 to slide along the rail. The sliding plate 6 on the inner side of the mobile frame 3 is embedded in the groove 7 at the top of the rack and pinion rail 2 to ensure the stability of movement. The extension end of the hydraulic cylinder 8 pushes the fire extinguishing component 9 to rise and fall vertically to adjust the initial height. Motor 1 92 drives steering seat 93 to rotate, causing connecting rod 97 to turn directly above the vehicle; Motor 2 95 drives rotating seat 96 to finely adjust the angle, ensuring that fire blanket device 912 is deployed vertically; Electric push rod 1 98 pushes mounting plate 911 to slide outward along storage groove 1 99, and telescopic rod 910 extends simultaneously, unfolding the fire blanket device 912 wrapped around connecting rod 97 and telescopic rod 910; The extension of telescopic rod 910 allows fire blanket device 912 to unfold laterally, covering the width of two lanes; Counterweight rod 903 is located at both ends of the fire blanket, providing counterweight to facilitate the placement of the fire blanket at the bottom of one end of the vehicle and to ensure that the fire blanket fits tightly against the vehicle, reducing the coverage gap; In the initial state of fire blanket deployment, the two ends of the steel wire rope 901 are connected to the iron wires 902 inside the counterweight rod 903, and the fire blanket device 912 is suspended above the vehicle. During deployment, the electric push rods 915 and 918 retract, pulling the clamping positioning plates 923 and 925 through the connecting frame 919 and 921 to release the end of the fire blanket. The robot moves slowly, and the fire blanket device 912 falls vertically due to the gravity of the counterweight rod 903, covering the top of the vehicle. At this time, the two counterweight rods 903 are located at the front and rear of the vehicle, respectively. When motor 2 95 rotates in the reverse direction, wire rope 901 tightens accordingly, pulling two counterweight rods 903 through wire 902. The counterweight rods 903 are blocked by the vehicle chassis and move towards the center of the vehicle bottom until they are blocked by the wheels. This allows the fire blanket to gradually wrap around the vehicle and eventually cover it tightly, achieving isolation. As wire rope 901 continues to tighten, the vehicle wrapped by the fire blanket can be hoisted up and dragged off the ground. As the mobile frame 3 moves, the vehicle can be dragged to the outside of one end of the tunnel, thus preventing the vehicle from obstructing traffic in the tunnel. At the same time, it can also prevent smoke from the fire from affecting the tunnel's visibility and causing unnecessary traffic accidents. Before deployment, electric push rods 2 (915) and 3 (918) extend, pushing connecting frame 1 (919) and connecting frame 2 (921) outward. Telescopic frame 920 extends, and with the elastic action of spring 922 and clamping positioning telescopic frame 924, clamping positioning plate 1 (923) and clamping positioning plate 2 (925) clamp the end of the fire blanket, preventing deployment deviation due to gravity. The elastic connection design of clamping positioning plate 1 (923) and clamping positioning plate 2 (925) can adapt to fire blanket devices 912 of different thicknesses, ensuring clamping stability.

[0031] Finally, the following points should be noted: First, in the description of this invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical connection or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the object being described changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A track-mounted robot for delivering fire blankets in tunnels, comprising a fixed cover (1), characterized in that: The fixed cover (1) is equipped with a rack and pinion slide rail (2) inside. The rack and pinion slide rail (2) is connected to a movable frame (3) outside. Two symmetrical motors (4) are installed on the top of the movable frame (3). The output ends of the two motors (4) are connected to gears (5). A hydraulic cylinder (8) is installed on one side inside the movable frame (3). A fire extinguishing component (9) is installed on the telescopic end of the hydraulic cylinder (8). A fire extinguishing liquid tank (10) is installed at the bottom of the fire extinguishing component (9). The fire extinguishing assembly (9) includes a fixed base (91) installed at the telescopic end of a hydraulic cylinder (8). A motor (92) is installed inside the fixed base (91). A steering seat (93) is connected to the power drive end of the motor (92). A protective cover (94) is installed on the top of the steering seat (93). A motor (95) is installed inside the protective cover (94). A rotating seat (96) is connected to the power drive end of the motor (95). A connecting rod (97) is installed inside the rotating seat (96). An electric push rod (98) is installed inside the connecting rod (97). A storage groove (99) is provided at the inner edge of the connecting rod (97). An installation plate (911) is installed at the telescopic end of the electric push rod (98). A telescopic rod (910) is installed at one end of the installation plate (911). A fire blanket device (912) is wrapped around the outside of both the connecting rod (97) and the telescopic rod (910). A fixing plate (914) is installed on one side of the outer side of the protective cover (94). 14) has an internal telescopic plate (916) connected to it. A fixed plate two (917) is installed at one end of the telescopic plate (916). An electric push rod two (915) is installed at one bottom end of the fixed plate one (914). An electric push rod three (918) is installed at one bottom end of the fixed plate two (917). A connecting frame one (919) and a connecting frame two (921) are respectively installed at the telescopic ends of the electric push rod two (915) and the electric push rod three (918). A telescopic frame is installed at one end of the connecting frame two (921). (920) Several sets of equidistant springs (922) are installed at the bottom of the connecting frame one (919). Each spring (922) has a clamping positioning plate one (923) installed at one end. A clamping positioning telescopic frame (924) is connected to the inner edge of the clamping positioning plate one (923). A clamping positioning telescopic frame (924) is installed at one end of the clamping positioning telescopic frame (924). A linkage plate (926) is installed at one end of the mounting plate (911) and one side of the fixing plate two (917). The connecting rod (97) and the telescopic rod (910) are both equipped with steel wire ropes (901), and the fire blanket device (912) is equipped with counterweight rods (903) at both ends. The two counterweight rods (903) are equipped with iron wires (902) inside. The two ends of the steel wire rope (901) are connected to the two ends of the iron wires (902).

2. The track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: The teeth of the gear (5) mesh with the teeth of the rack and pinion rail (2) to drive the moving frame (3) to move along the rack and pinion rail (2). The gear (5) is rotatably connected inside the moving frame (3).

3. The track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: Two symmetrical sliding plates (6) are installed on one side of the inside of the movable frame (3), and two symmetrical sliding grooves (7) are opened on the top of the rack and pinion slide rail (2).

4. A track-mounted robot for deploying fire blankets in tunnels according to claim 3, characterized in that: The groove (7) is slidably connected to the inside of the slide plate (6).

5. A track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: The steering seat (93) is rotatably connected to the top of the fixed seat (91), and the rotating seat (96) is rotatably connected to one side of the protective cover (94).

6. A track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: The telescopic rod (910) and the externally wrapped fire blanket device (912) are both located inside the storage groove (99), and the outer diameter of the mounting plate (911) is the same as the outer diameter of the connecting rod (97). The electric push rod (98) drives the mounting plate (911) and the telescopic rod (910) to extend and retract along the storage groove (99) to adjust the coverage of the fire blanket device (912).

7. A track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: The first fixed plate (914) and the second fixed plate (917) are connected by a telescopic plate (916), and the second electric push rod (915) and the third electric push rod (918) drive the first connecting frame (919) and the second connecting frame (921) to move respectively.

8. A track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: The telescopic frame (920) is connected to the inner edge of the connecting frame one (919) to enable the clamping and releasing of the end of the fire blanket device (912) by the clamping positioning plate one (923) and the clamping positioning plate two (925).

9. A track-mounted robot for deploying fire blankets in tunnels according to claim 1, characterized in that: The clamping positioning plate one (923) and clamping positioning plate two (925) are elastically connected by a spring (922) and a clamping positioning telescopic frame (924) to adapt to fire blanket devices (912) of different thicknesses and to ensure clamping stability.

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